Voir la notice de l'article provenant de la source Math-Net.Ru
@article{KUMEM_1995_3_a0, author = {A. P. Shirokov}, title = {{\CYRP}{\cyrr}{\cyre}{\cyrd}{\cyri}{\cyrs}{\cyrl}{\cyro}{\cyrv}{\cyri}{\cyre}}, journal = {In memoriam N. I. Lobatschevskii}, pages = {3}, publisher = {mathdoc}, volume = {3}, year = {1995}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/KUMEM_1995_3_a0/} }
A. P. Shirokov. Предисловие. In memoriam N. I. Lobatschevskii, In memoriam N. I. Lobatschevskii, Tome 3 (1995). http://geodesic.mathdoc.fr/item/KUMEM_1995_3_a0/